CN115083633A - Scaling simulation fuel assembly - Google Patents
Scaling simulation fuel assembly Download PDFInfo
- Publication number
- CN115083633A CN115083633A CN202210504867.5A CN202210504867A CN115083633A CN 115083633 A CN115083633 A CN 115083633A CN 202210504867 A CN202210504867 A CN 202210504867A CN 115083633 A CN115083633 A CN 115083633A
- Authority
- CN
- China
- Prior art keywords
- simplified
- tube
- fuel assembly
- fuel
- assembly according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/001—Mechanical simulators
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
- G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
- G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
- G21C3/33—Supporting or hanging of elements in the bundle; Means forming part of the bundle for inserting it into, or removing it from, the core; Means for coupling adjacent bundles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses a scale simulation fuel assembly, which relates to the technical field of fuel assembly safety detection and comprises an upper simplified pipe seat, a simplified grid and simplified fuel rods, wherein the simplified grid is designed with more than two layers, simplified guide pipes are uniformly distributed in the simplified grid, the upper simplified pipe seat is arranged at the top end of each simplified guide pipe, the lower simplified pipe seat is arranged at the bottom end of each simplified guide pipe, and the simplified fuel rods are uniformly arranged in the simplified grid. The invention has simple structure, convenient manufacture and assembly, low cost and convenient operation, the cross section of the assembly is distributed on the real product with consistent structure, the total length is not more than 1200mm, and the invention can meet the functional requirements of the relevant detection such as fuel rod oxidation film detection, fuel assembly pool edge size detection and the like.
Description
Technical Field
The invention relates to the technical field of fuel assembly safety detection, in particular to a scaling simulation fuel assembly.
Background
The fuel assembly is composed of an upper tube seat, a lower tube seat, a grid, a guide tube and a fuel rod, is a core component of a reactor, and has the basic functions of containing fuel and fission products, realizing the chain reaction of nuclear fuel and converting nuclear energy into heat energy. The fuel rods are heating elements; the lattice frames position, support and protect the fuel rods, so that a certain grid distance is kept to ensure the water-uranium ratio required by nuclear design, the fission neutrons are effective and slow, and the continuous fission reaction is maintained; the guide pipe provides an insertion channel for related components, and effective regulation of reactor power is realized.
In order to monitor and research the operation condition of the fuel assembly, high-efficiency and high-precision detection is required to be carried out on the characteristic dimension of the irradiated fuel assembly, and in order to achieve the aim, a simulated fuel assembly matched with detection equipment for verification, calibration and calibration is also required.
The commonly used simulated fuel assembly conforms to the actual fuel assembly structure, only the UO in the fuel rod therein 2 The pellets were replaced with simulated molybdenum pellets. Due to the complex manufacturing of the fuel assembly, the simulated fuel assembly has limited cost reduction, larger size and difficult operation compared with the real fuel assembly.
Disclosure of Invention
The invention aims to provide a scaled simulation fuel assembly to solve the problems of high cost, difficult operation and the like in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the scale-down simulation fuel assembly comprises an upper simplified pipe seat, a simplified grid and simplified fuel rods, wherein the simplified grid is designed to have more than two layers, simplified guide pipes are uniformly distributed in the simplified grid, the upper simplified pipe seat is installed at the top ends of the simplified guide pipes, the lower simplified pipe seat is installed at the bottom ends of the simplified guide pipes, and the simplified fuel rods are uniformly installed in the simplified grid.
Preferably, the simplified guide tubes comprise eight first simplified tubes, sixteen second simplified tubes and a central simplified tube.
Preferably, the first simplified pipe is composed of a first support guide column, a second support guide column and a third support guide column, and the first simplified pipe is formed by connecting the first support guide column, the second support guide column and the third support guide column through a threaded structure.
Preferably, the first simplified tubes are distributed in a cross shape, and the first simplified tubes fix the simplified lattice by a step structure, and the central simplified tube is disposed at a central position of the simplified lattice.
Preferably, the top end and the bottom end of the second simplified pipe are connected with the upper simplified pipe seat and the lower simplified pipe seat through bolts.
Preferably, the central simplified tube consists of a guide tube part and a simplified buffering part, the guide tube part is inserted into a corresponding hole of the upper simplified tube seat, the protruding head part of the simplified buffering part is connected with the lower simplified tube seat through a bolt, and the central simplified tube is consistent with the structure of the real instrument tube.
Preferably, the simplified fuel rod is designed with two hundred sixty four fuel rods, including sixty four peripheral fuel rods and two hundred inner ring fuel rods, the top ends of the simplified fuel rods are all provided with upper end plugs through bolts, the bottom ends of the simplified fuel rods are all provided with lower end plugs through bolts, and the simplified fuel rods are fixed on the simplified grillwork through the upper end plugs and the lower end plugs.
Preferably, the peripheral fuel rod adopts a zirconium alloy cladding welded end plug structure.
Preferably, the inner ring fuel rods are all solid austenitic stainless steel rods.
Preferably, the upper simplified pipe seat, the simplified guide pipe, the simplified grid and the lower simplified pipe seat are all made of stainless steel.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is composed of an upper simplified tube seat, a simplified guide tube, a simplified grid, a simplified fuel rod and a lower simplified tube seat, has simple structure, convenient manufacture and assembly, low cost and convenient operation, the cross section of the assembly is distributed on the real product with consistent structure, the total length is not more than 1200mm, and the invention can meet the functional requirements of the relevant detection such as fuel rod oxidation film detection, fuel assembly pool edge size detection and the like.
Drawings
FIG. 1 is a schematic view of a scaled fuel assembly according to the present invention;
FIG. 2 is a schematic top view of a simplified top view of a socket according to the present invention;
FIG. 3 is a schematic top view of the simplified grid structure of the present invention;
FIG. 4 is a schematic top view of the simplified stem structure of the present invention;
FIG. 5 is a schematic view of a first simplified tube structure according to the present invention;
FIG. 6 is a schematic diagram of a second simplified tube structure according to the present invention;
FIG. 7 is a simplified schematic diagram of the present invention;
FIG. 8 is a schematic view of a peripheral fuel rod configuration of the present invention;
FIG. 9 is a schematic view of an inner ring fuel rod of the present invention.
In the figure: 1. the upper simplified tube seat; 2. the guide pipe is simplified; 201. a first simplified tube; 202. a second simplified tube; 203. a central reduced tube; 3. simplifying the framework; 4. the fuel rod is simplified; 401. peripheral fuel rods; 402. an inner ring fuel rod; 5. a lower simplified tube seat; 6. an upper end plug; 7. a lower end plug; 8. a first support guide post; 9. a second support guide post; 10. a third support guide post; 11. a guide tube member; 12. the cushioning member is simplified.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a technical solution:
a scale simulation fuel assembly comprises an upper simplified tube seat 1, a simplified grid 3 and simplified fuel rods 4, wherein the simplified grid 3 is designed with more than two layers, simplified guide tubes 2 are uniformly distributed in the simplified grid 3, and the simplified guide tubes 2 comprise eight first simplified tubes 201, sixteen second simplified tubes 202 and a central simplified tube 203;
the first simplified pipe 201 is composed of a first support guide column 8, a second support guide column 9 and a third support guide column 10, and the first simplified pipe 201 is formed by connecting the first support guide column 8, the second support guide column 9 and the third support guide column 10 through a threaded structure;
the first simplified tubes 201 are distributed in a cross shape, the first simplified tubes 201 fix the simplified grillwork 3 through a step structure, and the central simplified tube 203 is arranged at the central position of the simplified grillwork 3;
the top end and the bottom end of the second simplified tube 202 are connected with the upper simplified tube seat 1 and the lower simplified tube seat 5 through bolts;
the central simplified tube 203 consists of a guide tube part 11 and a simplified buffer part 12, the guide tube part 11 is inserted into a corresponding hole of the upper simplified tube seat 1, the protruding head part of the simplified buffer part 12 is connected with the lower simplified tube seat 5 through a bolt, and the central simplified tube 203 is consistent with the structure of a real instrument tube;
the top end of the simplified guide tube 2 is provided with an upper simplified tube seat 1, the bottom end of the simplified guide tube 2 is provided with a lower simplified tube seat 5, and simplified fuel rods 4 are uniformly arranged in the simplified grid 3;
the simplified fuel rod 4 is designed with two hundred sixty four fuel rods, including sixty four peripheral fuel rods 401 and two hundred inner ring fuel rods 402, the top ends of the simplified fuel rods 4 are all provided with upper end plugs 6 through bolts, the bottom ends of the simplified fuel rods 4 are all provided with lower end plugs 7 through bolts, and the simplified fuel rods 4 are fixed on the simplified grillwork 3 through the upper end plugs 6 and the lower end plugs 7;
the peripheral fuel rods 401 adopt a zirconium alloy cladding welding end plug structure;
the inner ring fuel rods 402 are all solid austenitic stainless steel rods;
the upper simplified tube seat 1, the simplified guide tube 2, the simplified grid 3 and the lower simplified tube seat 5 are made of stainless steel materials, the scale simulation fuel assembly is simple in structure, convenient to manufacture and assemble, low in cost and convenient to operate, the cross sections of the assemblies are distributed in the same structure of a real product, the total length is not more than 1200mm, and the functional requirements of relevant detection such as fuel rod oxidation film detection and fuel assembly pool edge size detection can be met.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A scaled simulated fuel assembly comprising upper (1), simplified grids (3) and lower (5) simplified headers, characterized in that: simplify framework (3) design and have more than two-layer, the inside evenly distributed of simplifying framework (3) has simplification stand pipe (2), simplify the top of stand pipe (2) and install and simplify tube socket (1), simplify and simplify tube socket (5) under the bottom of stand pipe (2) is installed, simplify the inside evenly installed of framework (3) and simplify fuel rod (4).
2. A scaled simulation fuel assembly according to claim 1, c h a r a c t e r i z e d in that the reduced guide tubes (2) comprise eight first reduced tubes (201), sixteen second reduced tubes (202) and a central reduced tube (203).
3. A scaled simulation fuel assembly according to claim 2, wherein the first simplified pipe (201) is composed of a first support guide pillar (8), a second support guide pillar (9) and a third support guide pillar (10), and the first simplified pipe (201) is composed of the first support guide pillar (8), the second support guide pillar (9) and the third support guide pillar (10) which are connected by a screw structure.
4. A scaled model fuel assembly according to claim 2, wherein the first simplified tubes (201) are distributed in a cross shape, and the first simplified tubes (201) fix the simplified lattice (3) by a step structure, and the central simplified tube (203) is disposed at the central position of the simplified lattice (3).
5. A scaled simulation fuel assembly according to claim 2, wherein the second simplified tube (202) is bolted at its top and bottom ends to the upper (1) and lower (5) simplified tube holders.
6. A scaled simulation fuel assembly according to claim 2, wherein the central simplified tube (203) is composed of a guide tube member (11) and a simplified buffer member (12), the guide tube member (11) is inserted into a corresponding hole of the upper simplified tube holder (1), the protruding head of the simplified buffer member (12) is connected with the lower simplified tube holder (5) by a bolt, and the central simplified tube (203) is consistent with the structure of a real instrument tube.
7. A scaled simulation fuel assembly according to claim 1, wherein the simplified fuel rods (4) are designed with two hundred sixty four fuel rods, including sixty four peripheral fuel rods (401) and two hundred inner fuel rods (402), the simplified fuel rods (4) are each bolted with an upper end plug (6) at their top ends, the simplified fuel rods (4) are each bolted with a lower end plug (7) at their bottom ends, and the simplified fuel rods (4) are fixed to the simplified grids (3) by the upper end plugs (6) and the lower end plugs (7).
8. A scaled simulation fuel assembly according to claim 7, wherein the peripheral fuel rods (401) employ a zirconium alloy clad welded end plug construction.
9. A scaled simulation fuel assembly according to claim 7, wherein the inner ring fuel rods (402) are solid rods of austenitic stainless steel.
10. A scaled simulation fuel assembly according to claim 1, characterized in that the upper simplified pipe seat (1), the simplified guide pipe (2), the simplified grid (3) and the lower simplified pipe seat (5) are made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210504867.5A CN115083633A (en) | 2022-05-10 | 2022-05-10 | Scaling simulation fuel assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210504867.5A CN115083633A (en) | 2022-05-10 | 2022-05-10 | Scaling simulation fuel assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115083633A true CN115083633A (en) | 2022-09-20 |
Family
ID=83247489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210504867.5A Pending CN115083633A (en) | 2022-05-10 | 2022-05-10 | Scaling simulation fuel assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115083633A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999688A (en) * | 2022-06-14 | 2022-09-02 | 中国核动力研究设计院 | Scaling simulation fuel assembly |
-
2022
- 2022-05-10 CN CN202210504867.5A patent/CN115083633A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114999688A (en) * | 2022-06-14 | 2022-09-02 | 中国核动力研究设计院 | Scaling simulation fuel assembly |
| CN114999688B (en) * | 2022-06-14 | 2024-04-26 | 中国核动力研究设计院 | Scaling simulation fuel assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20080084957A1 (en) | Nuclear reactor fuel assemblies | |
| KR20080028439A (en) | Advanced gray rod control assembly | |
| Pioro et al. | Current status of electricity generation at nuclear power plants | |
| CN115083633A (en) | Scaling simulation fuel assembly | |
| Hartanto et al. | Neutronics assessment of accident-tolerant fuel in advanced power reactor 1400 (APR1400) | |
| KR840002142A (en) | Nuclear fuel | |
| JP6666072B2 (en) | Fuel rods and fuel assemblies | |
| Villarino | Core performance improvements using high density fuel in research reactors | |
| Oettingen et al. | Numerical design of the Seed-Blanket Unit for the thorium nuclear fuel cycle | |
| JP6691000B2 (en) | Fuel rods and fuel assemblies | |
| RU2138861C1 (en) | Spacer grid of nuclear reactor fuel assembly | |
| JPH11352272A (en) | Reactor core and fuel assembly and fuel element used for the core | |
| RU2806814C1 (en) | Fuel assembly of nuclear reactor (variants) | |
| Zuhair et al. | Study on neutronic characteristics of NuScale reactor core with thorium coating | |
| RU2166214C1 (en) | Composite fuel assembly for power control system of nuclear reactor core | |
| Zuhair et al. | Study On Criticality and Neutronic Safety Parameters Of Nuscale Fuel Assembly | |
| JP7168528B2 (en) | fuel assembly | |
| Khan et al. | IAEA CRP Benchmark of Kalinin VVER-1000 NPP: An Analysis Using EXCEL-TRIHEX-FA Code System | |
| JPH0618689A (en) | Fuel aggregate for boiling water type reactor | |
| CN109935361B (en) | Square double-sided cooling annular fuel assembly | |
| Villarino et al. | Neutronic performance of the U-Mo fuel type in the replacement research reactor | |
| Dastur et al. | Space-time kinetics of CANDU systems | |
| Marsault et al. | Pre-design studies of SCWR in fast neutron spectrum: evaluation of operating conditions and analysis of the behaviour in accidental situations | |
| Azande et al. | Determination of LEU core safety related parameters of NIRR-1 using WIMS and CITATION codes | |
| Harms | 7uPCX 0.855 cm Pitch Pure Water Moderator. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Applicant after: National Nuclear Uranium Industry Development Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant before: National Nuclear Uranium Industry Development Co.,Ltd. |
|
| CB02 | Change of applicant information |